Web-perfecting printing-machine



(No Model.) I 3 Sheets-Sheet 1. J. T. HAWKINS.

WEB PERFEOTING PRINTING MACHINE. No. 332,521. Patented Dec..15, 1885.

(No ModeL) 3 She,etsSheet 2.

J. T. HAWKINS.

WEB PERPEGTING PRINTING MACHINE. No. 332,521. Patented Dec. 15, 1885.

N. PETERS. rm uuhn m her. Walhlnglun. u c

3 SheetsSheet 3.

J. T. HAWKINS.

WEB PERPEGTING PRINTING MACHINE.

(No Model.)

Patented Dec.

n; M4 2 W N PETERS. Plwkb'fimognpher, Washmglcn, D, C.

UNlTED STATES PATENT OFFICE.

JOHN T. HA\VKINS, OF TAUNTON, MASSACHUSETTS.

WEB-PERFECTING PRINTING-MACHINE.

SPECIFICATION forming part of liiet'tera Batent No. 332,521, dated December 15, 1885.

Application filed May 11. 1585. Serial No. 165,051.

me February 18, 1884, and bearing the Serial- No. 121,083,) in relation to two'impressiorr' V cylinders-from one to the other of which it printing the first side.

transfers asheet, reversing it during said transfer-and in relation to a type-cylinder, as to dispense with the necessity for conforming the proportions of said impression-cylinders and type-cylinder to those of the sheet-reverser and to its immediate connection to or distance from said cylinder, so that'the position and diameter of said sheet-reverser may instead be made to conform in all cases to all conditions imposed by the other named elements.

The invention consists of the parts and combinations of parts as hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is an outline longitudinal vertical section through such parts of one-half of a machine as are necessary to illustrate the invention, in which the sheets are out before printing the first side, showing how (by' the employment of intermediate wheels of suitable diameter) the sheet-reverser may, while conforming in diameter to the respective diameters of the impression-cylinders, be placed at any position relative to them and the type-cylinder necessary to bring the sheets at the proper times into positions to meet the proper forms. This figure also illustrates the use of the conveying or controlling cylinder for controlling the head of the sheet in this form of machine, as explained and claimed in my application filed February 18, 1884, bearing the Serial No. 121,084. In the case herein set forth, however, the sheets are cut from the web before Fig. 2 is an enlarged view of part of Fig. 1, showing the relative positions of parts of the sheet-reverser in connection with the contiguous elements of the (No model.)

machine. Figs. 3 to 7, inclusive, show details of ,the sheet-reverser and its operating mechanism, by means of which said reverser is actuated from any suitably-moving parts of I the machine, similar to that fully described in application Serial No. 121,083, above mentioned.

Referring now to Figs. 1 and 2, the several letters therein indicate the respective parts below mentioned. A is the form-cylinder; A and A the forms; B B, impression-cylinders; G the sheet-reverser; 0 0 each a series of ta'pepulleys with a gear-wheel on the axis, engaging, respectively, gear-wheels on the impression-cylinders B B; C, an intermediate gear-wheel engaging the gears on the axes of the tape-pulleys O and O and the gear on the axis of the sheet-reverser C 0 are a series of tape-pulleys running loosely on the same axis to which the gear-wheel 0* is secured,

so that said pulleys may run in a contrary direction to the gear 0* and its shaft. H is a cylinder carrying grippers H. Said cylinder is made double the diameter of the sheet-reverser G and geared thereto. D D are cutting-cylinders for severing the sheets from the mediate gear-wheel engaging similar wheels on D and L, for imparting motion to the latter. A series of three tapes, t, which run in line with the unprinted margins of the sheet, pass, commencing at L to the left around L around the impression cylinder l3, thence over 0 to and slightly around 0 thence around 0 thence around the impression-cylinder B, thence around L to the right-hand side of the machine, where is repeated this or a similar path, returning again to the pulleys L, it being presumed here that the entire apparatus shown, exceptthe type-cylinder, is duplicated on the other side of the machine, and therefore not necessary to be shown. A series of tapes, t, commencing at 0, pass to the left hand around 0 around 0, around 0, to the point of starting. A series of tapes, it, commencing atthe top of impression-cylinder B, pass around it to the right, thence partly over O thence around Hto the point of starting. A series of tapes, t, commencing at the top of B, pass around it to the right, thence around L, thence over L thence to the point of starting. Aseries oftapes, t, commencing at the top of L", pass to the right, thence around L,

thence under and around L to the point of starting. It will be obvious that in this'construction, by varying the proportions of intermediate gears, G O G, and their pulleys the sheet-reverser 0 may be placed in any position relative to the impression-cylinders Band B and the form-cylinder A necessary to bring the sheets and forms in contact at the proper times. It will also be seen that in this construction the severed sheets will be conveyed through the entire operation of printing without the use of grippers in the impression-cylinders B B, as inthe application Serial No.

121,083, above mentioned. Thus the path of the web will be as follows: Coincident with the sheet being cut from the web'by the cutting cylinders D D the leading end enters in be tween tapes it at the point ofcontact of the impression-cylinder B and pulleys L remaining between them until reaching the poin'tof con.-

tact of impressioncylinderB and pulleys 0,,

whence it passes to (3 between tapes tand t untilseized at the tail end by the twin grippers f of the sheet-reverser C the head of the sheet, having been previously carried partly around I-I'by the grippers H, which seize the head of thesheet at the proper time at the point of contact of the cylinder H and thesheetreverser 0 The grippers H are made tore;-

lease the head of the sheet about at the time" that the twin grippers f have made a semirevolution. After grasping the tail of the sheet and having conveyed the tail of the sheet so as to enter between the tapes t and i at which point the twin grippers f release it, it is conveyed by tapes 1;" l to the point ofcontact of impression-cylinder Band pulleys 0 where it enters between tapes tand. t being'thence conveyed by themuntil it issues from the machine by the pulleysL L, whence it may be conveyed to the delivery apparatus or folder in any desired position.

The positions of the sheet are' indicated throughout by broken lines.

Fig. 3 is an elevation, partly in section, of" the sheet-reverser, showing; broken parts of the main frames A of the machine, in which frames it is carried and operated, as fully de scribed in application Serial No. 121,083,. above mentioned. Fig. 4' is an end view of the right-hand end of Fig. 3, the frame Aof"' the machine being removed. Fig. 5 is atransverse section enlarged of the gripper-carrier, showing the twin grippers, their shafts, and operating-levers. Fig. 6 is a side elevation on the same enlarged scale of the levers secured to the twin-grippcr shafts. Fig. 7 is a view in plan of one end of the twin-gripper shafts, showing the positionof the springs which operate to close-the twin grippers upon each other.

Referring to said figures, agear-wheel, f,is

points.

Fig. 2;. one of the cams f?is about to open one of thetwin grippers f,' allowing thesheet to follow the path between the tapes t t. Continuing the rotation of the sheet-reverser' :i'nthedirection of the arrow, Fig. 2*,both' roll secured to the shaft f ,the latter journaled in the frame A", engaging gears G and the gear oncylinde'r H. Three or any number or plain wheels, f of the same diameter as the pitchcircle of the gear f, are also secured to the shaft f.. Journaled in the gear f and the wheels f is a gripper'carr'ieflf. :In the gripper-carrier f 4 arej ournaled two gripper-shafts,

On one end of the grippiar-carrierf is securedaspur-pinion, f. Upon a stud in the gear f runs an intermediate pinion, f". On the shaft f runs freely a wide-faced pinion,

f gearing on one half its face with-the intermediate pinion, f On a short rock-shaft, f journaled in the frames A", is secured, to its inner end, a sector-gear, f gearing with theother half of the face ofthe wide-faced pinion f andon its outer end' a l'ever (not shown)- carrying a roller which engagesa cam,as fully described. iniapplication. Serial No. 121,083,.

above mentioned. On the pair of'twin-grip per shafts f 'are secu red pairs of twin grippers closin u oneach other attheir points. by

means of the springs f The hub of each of these twin grippers f is made so as to'form a stop, 5,. resting on the flat part of the gripper;

Serial N 0'. 121,083, but not shown herein-isv given such motion as to bring the gripper carrierf, and with it the twin grippersj", toassume the various positions shown in, Fig. 21in full lines, when delivering the tail of the sheet to andbetween the tapes t i", into its'path toreceive itsimpression upon its second side, and;

.in dotted lines in threeother positions, always 1 coming toth'e-several positionsshownat those At the point shownin ful'l lines,

ers j' as next seen in dottedlines', are in confeet with the cams f and the twin grippers 1' f are both opened away from" each other.

(Eontinuing-tothenext position, as shown indotted lines, Fig. 2, one of the twin grippers if" hasreturned to theposition as limited by the-stop'i, and the other is held partly open by the action of oneof the cams f 'for the reception of the tail ofthe sheet then passing in its pathbetween tapes. t t" after having.

received its impression on itsfirst'side; Thus the'sheet enters from the cuttingi-cylinders'D- 1 D between the tapes tt; receivesiits first imapression, then passes betweentapes t t, is

conveyed around the sheet-reverser 0",; seized at the head by the grippers H of the controlling-cylinder H, conveyed partly around the latter, meanwhile being seized by the tail by the twin grippers f until the parts assume the position shown in Figs. 1 and 2, with the grippers H releasing the head of the sheet to drop down, as indicated by dotted lines at S, Fig. 1, at which time the twin grippers f" are leading the tail end into and between the tapes t t; thence it passes between tapes t t, receives its impression on the second side, and finally passes'from the machine between tapes t t to the folder or other means of delivery.

I do not herein claim the parts illustrated on Sheet 3 of the accompanying drawings, as the same are claimed in my pending application, Serial No. 121,083, filed February 18, 1884.

Having thus fully described my said im provements, as of my invention I claim- 1. In a web-perfecting printing-machine, in combination with a type or form cylinder, as A, impression-cylinders, as B B, a rotary sheet-reverser, as 0 and a series of intermediate gears, as G C 0, whereby the sheets from one impression -cylinder are timed in their paths proper to meet their respective forms, while the sheet-reverser is maintained of the same diameter as that of theimpressioncylinders, substantially as and for the purposes set forth.

2. In a web-perfecting printing-machine, in combination with a type or form cylinder, as A, a pair of impression-cylinders, as B B, a rotary sheet-reverser, as O, a series of intermediate gears, as O O O, and a sheet-conveying cylinder, as H, whereby the sheet is re versed, its tail becoming its head,substantiall y as and for the purposes set forth.

3. In a web-perfecting printing-machine, in combination with a type or form cylinder, as A, a pair of impression-cylinders, as B B, a rotary sheet-reverser, as O", a series of intermediate gears, as O O 0*, a sheet-conveying cylinder, as H, and a series of conveyingtapes, as t t t t, forming paths for the sheet, whereby it is conveyed through the impressions and to the sheet-reverser without the use of grippers in said impression-cylinders, substantially as and for the purposes set forth.

JOHN T. HAWKINS.

Witnesses:

ELISHA T. JACKSON, J. F. HALEY. 

